UsbBaseClass.cpp

00001 #include "UsbBaseClass.h"
00002 //#define __DEBUG
00003 #include "mydbg.h"
00004 
00005 UsbBaseClass::UsbBaseClass()
00006 {
00007     if (m_pHost == NULL) {
00008         m_pHost = new UsbHostMgr;
00009         DBG_ASSERT(m_pHost);
00010         m_pHost->init();
00011     }
00012     DBG("m_pHost=%p\n", m_pHost);
00013 }
00014 
00015 UsbErr UsbBaseClass::Usb_poll(int timeout, int timeout2)
00016 {
00017     DBG("%p %d %d\n", this, timeout, timeout2);
00018     Timer t;
00019     t.reset();
00020     t.start();
00021     Timer t2;
00022     t2.reset();
00023     t2.start();
00024     while(t.read_ms() < timeout) {
00025         UsbErr rc = m_pHost->poll();
00026         if (rc == USBERR_PROCESSING) {
00027             t2.reset();
00028         }
00029         if (t2.read_ms() > timeout2) {
00030             DBG("%p t=%d\n", this, t.read_ms());
00031             return USBERR_OK;
00032         }
00033         wait_ms(50);
00034     }
00035     return USBERR_PROCESSING;
00036 }
00037 
00038 UsbHostMgr* UsbBaseClass::m_pHost = NULL;